ftDuino - OLED addon
The ftDuinos I²C interface can be used to add a small OLED display to the ftDuino.
Here you'll find a set of design files for a fischertechnik compatible case for a typical 0.96" OLED display,
The wiring compatible with the 6 pin I²C connector of the ftDuino is rather simple:
A matching arduino library can e.g. found in the Adafruit repository.